Oil-burning steam-boiler.



W. J. MCLEAN L J. L. MOCAULEY.

OIL BURNING STEAM BOILER.

APPLICATION FILED APR.27, 1911.

Paienedv Sept. 24 1912.

A ng/1,@ @5in/ UNITED STATES PATENT OFFtCE.

"WILLIAM J. MCLEAN AND JOHN L. MGCAULEY, OF BELLNGHM, `WASHINGTOl.

OIL-BURNING STEAELBOLER.

roe-29,570.

Specification of Letters Patent.

.Patented Sept. 24, 1912.

Application led Apri! 27, 1911. Serial No. 623,745.

obtained, and further, in the provision ot atl construction permitting);oli a single burner hcinpj operated, as desired, wit-hout injury lo thctire box.

ther objects will he set forth as our descriplion progresses and thosefeatures of construction, arrangements and combination ol.' parts onwhich we desire protection, succinctly defined in our annexed-claims.

lelerriiio` to the :icctuupanying drawing,

wherein like numerals ot reference indicate lil'o parts throughout theseveral views:

l `iuure l is a 'fragmentary longitudinal sec lion through the tire boxot a locomotive boiler, equipped and constructed in accordance with ourinvention. Fig. 2 is a transverse section thereor" taken on line 2 2 ofFir'. l. B is a longitudinal section, on large scale. through the lowerportion of the lire box und underlying' air conduit, the valves ordampcrs for the latter being shown in open position, und hief. i is afragmentary end elevation. illustrating more ok rt-iculzirly the valvecontrolliinr mechanism.

Referring to the drawing by numerals of reference, l indicatesthecombustion chamber troni which the tlues 5 lead, said chamhcr whichis ot usual construction, being clos-cd at the top by a crown wall orsheet Q and surrouudml by water jacket 3, closed at it.`l lower portionby a mud ring, Ll.

The bottoni ot the tire box is Yformed by a metallic wall l, lined with'ire brick or other suitable refractory material, 7, and ben mth wall Gwe provide a longitudinal ait conduit S whosey bottom is inclineddownwardly toward suitable air intake openings, that are provided in itsend portions the said inclination of the bottoni being' provided toprevent accumulation of oil in the air conduit. These conduit intakeopenings are controlled by valves or dempers 9, 9.

, 1. e u Reterence numeral 10 indicates air inlets provided in thebottom Wall G ot' the lire box to establish communication between thelat.- ter and conduit S, these air inlets conveniently consist-ingotshort tubes fixed to the metallic Wall 6 and projecting through lining 7to be protected by the latter, as is Well understood.

in accordance with our invention, the bottom wall 6 extendshorizontally, or substantially so, for the entire distance between thevertical end walls 11 and 12, in the former of which a suitable burner13 oi the hydrocarbon type, is mounted to direct its llame across thepath ot the air discharging from inlets 10.

The series of air inlets 10 extend troni burner 13 to side walls 'l-.und to wall 12, which latter has an inwardly and upwardly inclineddelecting portion 12', overlyingn some of the air inlets 10. We alsoprovide air inlets, as 15 and 1G in end wall 11 and side walls 14-respeetively. Through this arrangement. of inlets for the admission ofair, we have found by actual test that a practically perfectcombustionof the fuel is obtained, enabling the generation of steam economically,as contradistinguished from dcvices o like nature used prior to ourinvention. Further, end wall 12 is protected against injury by the heat,through the admission of air at the base, or beneath the overhanging'portion 12l thereof, which latter in deilecting the air inwardly retardsor tends to hold part ot the same. ln the furtherance of this object, wepreferably provide means for siniul'taneously swingingvulves 9, 9" withthe viili'e 9i being operated the greater distance to thereby obtain alarger supply of air at the point farthest re- -nioved from burner 13,said means comprising an operating; lever 17, having arms projecting onoppositesides ot its tulcruni 17a and connected by linlrs 1S and 19 withvalves S, i res iec'tively, the connection of the link 19 with its valve9 beine,- nearerPthe axis of movement of the valve than the connectionot the link 1S with its valve 9. `With this arrangement, it- Will beevident that' inasmuch as the valve 9 tance than the valve 9, more aircan enter at. the end controlled by said valve il", and a greatercirculation of air will therefore taire place alongside the Wall 12.This comparatively .Ureat volume of serves to keep end wail 12 cool andtherebyv protects is o en a Greater clised for engagement with a pin 21of valve 9,

through the medium of which independent opening movement of the valve ispermitted. An abutment orstrike part 22 on the side wall of conduit 8,trips link 19 durin downward swinging of valves 9, 9 when t e lever 17is raised thereby permitting the last named valve to close in case ithas been manually opened and held by the outer of the teeth 20..

Various changes can be made in the details of our herein disclosedconstruction, as

fall within the scope of our annexed claims. e

Having thus fully described our invention, what we claim as new anddesire to secure by Letters Patent of the United States, is:

1. In a structure of the character`v set forth, the combination with afurnacehaving an air inlet and a burner for projecting a Haine int'osaid furnace, of means for supplying air to the inlet comprising aconduit having opposite intake openings, and a bottom that inclinesdownwardl in opposite directions from an intermediate point toward saidintake openings. 1

2. In a structure of the character set forth, the combination with afurnace having an air inlet and a burner for .introducing a liame intosaid furnace, of means for supplying air to said inlet, comprising` aconduit having a plurality of openings, valves controlling the openings,and common means for actuating the valves and causing one to move agreater distance than the othe 3. In a 'structure of the character setforth, the combination with a furnace having an air inlet and a burnerfor introducing a flame into said furnace, of means for vsupplying airto said inlet, comprising a conduit having a plurality of openings,valves controlling the openings, and common means for actuating thevalves and permitting one to be operated independently of the other. I

4. In a structure of the vcharacter set forth, the combination with afurnace having a plurality of air inlets and a burner for introducing aflame into said furnace-- at a f'predetermined point, of means forsupplyl*ing air to said inlets, comprising a conduit having a pluralityof openings located at different distances from the burner valvescontrolling the openings, and common means for actuating the valves andcausing one to movea other. A

In a structure of. the character set forth, the combination with furnacehaving a plurality of air inlets and a burner for introducing a flameinto 'said furnace at a predetermined point, of means for supplying airto said inlets, comprising a conduit' greater distance than the forth,the combination with a furnace havy ing an air inlet and a burner forintroducing a :dame into said furnace, of means for supplying air tosaid inlet, comprising a conduit having a plurality of openings, valvescontrolling the openings, an actuating lever, and links connected to thelever and to the valves to cause both valves to be operated, and one tomove to a more open position than the other.

7. In a structure of the 'character set forth, the combination with afurnace having an air inlet and a burner for introducing a ameinto saidfurnace, of means for supplying air to said inlet, comprising a conduithaving a plurality of openings, valves controlling the openings, anactuating lever, and links connected to the lever and to the valves, oneof said connections being detachable and adjustable.

Stvln a structure of the character set fortli,.the"ombination with afurnace havingva plurality of air inlets in its bottom,

and a burner for introducing a dame into said furnace at a predeterminedpoint, of means for supplying air to said inlets, comprising a conduitbelow1 the bottom having opposite intake openings, one of which islocated nearer the burner than the other, swinging valves controllingthe intake openings, an actuating lever, links'connecting the lever withthe valves to swing both to open position and arranged to move one agreater distance than the other, and an adjustable connection betweenone of the valves and its link.

In testimony wheredf we atlix our signatures in presence of twoWitnesses.

WILLIAM J. MCLEAN. JOHN Il. MOAULEY. l/Vitnesses MORGAN iVHnnLnn, `W. H.LANcWonfrHY.

